Electrical Characteristics; System Parameters; Performance Parameters - Texas Instruments LMZ14201 SIMPLE SWITCHER Manual

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Electrical Characteristics

Limits in standard type are for T
to +125°C. Minimum and Maximum limits are ensured through test, design or statistical correlation. Typical values represent
the most likely parametric norm at T
following conditions apply: V
Symbol Parameter

SYSTEM PARAMETERS

(3)
Enable Control
V EN threshold trip point
EN
V EN threshold hysteresis
EN-HYS
Soft-Start
I SS source current
SS
I SS discharge current
SS-DIS
Current Limit
I Current limit threshold
CL
ON/OFF Timer
t ON timer minimum pulse width
ON-MIN
t OFF timer pulse width
OFF
Regulation and Over-Voltage Comparator
V In-regulation feedback voltage
FB
V Feedback over-voltage
FB-OV
protection threshold
I Feedback input bias current
FB
I Non Switching Input Current
Q
I Shut Down Quiescent Current
SD
Thermal Characteristics
T Thermal Shutdown
SD
T Thermal shutdown hysteresis
SD-HYST
θ Junction to Ambient
JA
θ Junction to Case
JC

PERFORMANCE PARAMETERS

ΔV Output Voltage Ripple
O
ΔV /ΔV Line Regulation
O IN
ΔV /I Load Regulation
O OUT
η Efficiency
(1) Min and Max limits are 100% production tested at 25°C. Limits over the operating temperature range are ensured through correlation
using Statistical Quality Control (SQC) methods. Limits are used to calculate Average Outgoing Quality Level (AOQL).
(2) Typical numbers are at 25°C and represent the most likely parametric norm.
(3) EN 55022:2006, +A1:2007, FCC Part 15 Subpart B: 2007. See AN-2024 and layout for information on device under test.
(4) θ measured on a 1.705" x 3.0" four layer board, with one ounce copper, thirty five 12 mil thermal vias, no air flow, and 1W power
JA
dissipation. Refer to PCB layout diagrams
Copyright © 2010–2013, Texas Instruments Incorporated
= 25°C only; limits in boldface type apply over the junction temperature (T
J
= 25°C, and are provided for reference purposes only. Unless otherwise stated the
J
= 24V, Vout = 3.3V
IN
Conditions
V rising
EN
V falling
EN
V = 0V
SS
d.c. average
V >+ 0.8V
SS
T = -40°C to 125°C
J
I = 1A
O
V >+ 0.8V
SS
T = 25°C
J
I = 10 mA
O
V = 0.86V
FB
V = 0V
EN
Rising
Falling
(4)
4 layer JEDEC Printed Circuit Board,
100 vias, No air flow
2 layer JEDEC Printed Circuit Board, No
air flow
No air flow
V = 12V to 42V, I
IN
V = 24V
IN
V = 24V V
IN
Product Folder Links:
SNVS649E – JANUARY 2010 – REVISED MARCH 2013
= 1A
O
= 3.3V I = 1A
O O
LMZ14201
LMZ14201
) range of -40°C
J
Min Typ Max
(1) (2) (1)
1.10 1.18 1.25
90
5 8 11
-200
1.4 1.95 3.0
150
260
.777 0.798 0.818
0.786 0.802 0.818
0.92
5
1
25
165
15
19.3
21.5
1.9
8
.01
1.5
92
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Units
V
mV
µA
µA
A
ns
ns
V
V
V
nA
mA
μA
°C
°C
°C/W
°C/W
°C/W
mV
PP
%
mV/A
%
5